20454986826 has 48 divisors (see below), whose sum is σ = 47308847040. Its totient is φ = 6368483520.

The previous prime is 20454986821. The next prime is 20454986831. The reversal of 20454986826 is 62868945402.

20454986826 is a `hidden beast` number, since 20 + 454 + 98 + 6 + 82 + 6 = 666.

It is an interprime number because it is at equal distance from previous prime (20454986821) and next prime (20454986831).

It is not an unprimeable number, because it can be changed into a prime (20454986821) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 396915 + ... + 445478.

It is an arithmetic number, because the mean of its divisors is an integer number (985600980).

Almost surely, 2^20454986826 is an apocalyptic number.

20454986826 is an abundant number, since it is smaller than the sum of its proper divisors (26853860214).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20454986826 is a wasteful number, since it uses less digits than its factorization.

20454986826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 842491 (or 842488 counting only the distinct ones).

The product of its (nonzero) digits is 6635520, while the sum is 54.

The spelling of 20454986826 in words is "twenty billion, four hundred fifty-four million, nine hundred eighty-six thousand, eight hundred twenty-six".